import type { NormalizedOutputOptions, OutputBundle, OutputChunk } from 'rollup';
import type { PluginOption } from 'vite';

import { EOL } from 'node:os';

import { dateUtil, readPackageJSON } from '@croco/node-utils';

/**
 * 用于注入版权信息
 * @returns
 */

async function viteLicensePlugin(root = process.cwd()): Promise<PluginOption | undefined> {
    const { name = '', description = '', homepage = '', version = '', author } = await readPackageJSON(root);
    return {
        apply: 'build',
        enforce: 'post',
        generateBundle: {
            handler: (_options: NormalizedOutputOptions, bundle: OutputBundle) => {
                const date = dateUtil().format('YYYY-MM-DD ');
                const copyrightText = `/*!
  * Name: ${name}
  * Version: ${version}
  * Author: ${JSON.stringify(author)}
  * Copyright (C) 2025 Croco
  * License: MIT License
  * Description: ${description}
  * Date Created: ${date}
  * Homepage: ${homepage}
  * Contact: xxxxxx@mail.com
*/
              `.trim();

                for (const [, fileContent] of Object.entries(bundle)) {
                    if (fileContent.type === 'chunk' && fileContent.isEntry) {
                        const chunkContent = fileContent as OutputChunk;
                        // 插入版权信息
                        const content = chunkContent.code;
                        const updatedContent = `${copyrightText}${EOL}${content}`;

                        // 更新bundle
                        (fileContent as OutputChunk).code = updatedContent;
                    }
                }
            },
            order: 'post',
        },
        name: 'vite:license',
    };
}

export { viteLicensePlugin };
